Slice the beef thinly for rolling, then marinate with a little soy sauce and a splash of red wine. Thinly slice the pork belly, onion, and carrot. Cut the king oyster mushroom into pieces. Finely chop the shallots.

Heat oil in a pan and sauté the shallots. Add the pork belly, onion, and carrot, and stir-fry until just starting to cook, then remove from heat. Lay out the beef slices on a plate, place some carrot, pork belly, and onion inside each slice, and roll them up.

Lightly sear the beef rolls. Sauté shallots until fragrant, then add the cream soda. Season with soy sauce, garlic & pepper powder, and oregano. Once it comes to a boil, add the beef rolls.

Add the remaining carrot and pork belly, and simmer until tender. When everything is cooked, pour in the red wine. Serve with sliced baguette.